Senior Full Stack Developer

Delta6Labs FinTech Pvt Ltd; India; On-site; INR 1,200,000 - 1,800,000; Full time

Job summary

Delta6Labs FinTech Pvt Ltd is seeking a Senior Full-Stack Developer to create highly scalable applications in the high-frequency trading domain. You will work on building end-to-end scalable solutions, guiding system architecture, and collaborating with various teams on mission-critical systems.

The ideal candidate has over 4 years of full-stack development experience, strong expertise in React.js and Vue.js, and knowledge in cloud platforms like AWS. Skills in Node.js, TypeScript, and real-time systems are essential.

Qualifications

• 4+ years of experience in full-stack development.
• Strong expertise in frontend technologies like React.js and Vue.js.
• Knowledge in cloud platforms and containerization.

Responsibilities

• Develop scalable back-end services and mobile-ready frontends.
• Design and build REST APIs and real-time communication systems.
• Integrate with third-party APIs, payment gateways, and ensure security practices.

Skills

React.js

Vue.js

Node.js

TypeScript

PostgreSQL

MongoDB

Redis

WebSockets

AWS

Docker

Job description

The HFT team of Delta6Labs is looking for a Senior Full-Stack Developer with experience in creating highly scalable, high-performance applications across the technology stack in the high-frequency trading domain. You will be building a scalable solution end-to-end as a Senior Full Stack Engineer and help build high-throughput real-time traders. Also, you will collaborate with other teams that design, develop, and optimize mission-critical systems capable of processing real-time events at scales measured in billions of transactions.

What You Will Own

• Development of a scalable back-end service written with Node.js and TypeScript
• Build a Mobile Ready React Frontend (Responsive + High Performance) JS and Vue.js
• Develop a REST API & WebSockets for building real-time communication systems
• Experienced in the development of real-time streaming data processing and high-concurrency architecture
• You will guide the system architecture, design choices, and code quality.
• Integration with Third-party APIs, Payment gateways, and External data providers
• Build scalable and reliable applications.
• Secure authentication, authorization, and data protection best practices
• Integrate with CI/CD pipelines, deploy, and provide production support
• Take part in code reviews, debugging, and technical documentation.

What We’re Looking For

• Someone who has 4+ years of experience in full-stack development

The Ideal candidate should have strong expertise in

• Frontend: React.js, Vue.js
• Database knowledge (PostgreSQL, MongoDB, and Redis)
• Experience working with real-time systems (WebSockets, event‑driven architecture)
• Have knowledge of designing high-performance & scalable systems.
• Knowledge in Cloud platform knowledge (AWS preferred) and Containerization (Docker)
• Outstanding analytical and debugging skills
• Work experience in fast‑paced, high‑impact settings

Good to Have

• Background with relevant experience in fintech/trading/payment systems
• Skilled in using high‑frequency‑trading platforms or real‑time financial data systems
• Familiarity with message queues, caching solutions, and microservices architecture
• Monitoring tool knowledge (Grafana, Sentry, etc.)
• Familiarity with multi‑tenant / SaaS architectures